static long
cmdreqsense(ScsiReq *rp, int argc, char *argv[])
{
long nbytes;
USED(argc, argv);
if((nbytes = SRreqsense(rp)) != -1)
makesense(rp);
return nbytes;
}
static long
cmdprobe(ScsiReq *rp, int argc, char *argv[])
{
char buf[32];
ScsiReq scsireq;
char *ctlr, *unit;
USED(argc, argv);
rp->status = STok;
scsireq.flags = 0;
for(ctlr="CDEFGHIJ0123456789abcdef"; *ctlr; ctlr++) {
/*
* I can guess how many units you have.
* SATA controllers can have more than two drives each.
*/
if(*ctlr >= 'C' && *ctlr <= 'D')
unit = "01";
else if((*ctlr >= '0' && *ctlr <= '9')
|| (*ctlr >= 'a' && *ctlr <= 'f'))
unit = "0123456789abcdef"; /* allow wide scsi */
else
unit = "01234567";
for(; *unit; unit++){
sprint(buf, "/dev/sd%c%c", *ctlr, *unit);
if(SRopenraw(&scsireq, buf) == -1)
continue;
SRreqsense(&scsireq);
switch(scsireq.status){
case STok:
case Status_SD:
Bprint(&bout, "%s: ", buf);
cmdinquiry(&scsireq, 0, 0);
break;
}
SRclose(&scsireq);
}
}
return 0;
}
int32_t
SRrequest(ScsiReq *rp)
{
int32_t n;
int status;
retry:
if(debug)
SRdumpReq(rp);
if(rp->flags&Fusb)
n = umsrequest(rp->umsc, &rp->cmd, &rp->data, &status);
else
n = request(rp->fd, &rp->cmd, &rp->data, &status);
rp->status = status;
if(status == STok)
rp->data.count = n;
if(debug)
SRdumpRep(rp);
switch(status){
case STok:
break;
case STcheck:
if(rp->cmd.p[0] != ScmdRsense && SRreqsense(rp) != -1)
rp->status = Status_SD;
if(debug || exabyte)
SRdumpErr(rp);
werrstr("%s", scsierr(rp));
return -1;
case STbusy:
sleep(1000); /* TODO: try a shorter sleep? */
goto retry;
default:
if(debug || exabyte)
SRdumpErr(rp);
werrstr("%s", scsierr(rp));
return -1;
}
return n;
}
